An American game that has traveled well is basketball.     1     is now played by more than 250 million people worldwide in an     2     (organize) way, as well as by countless others in informal games. Basketball began in 1891, when a minister,     3     (call) James Naismith, was asked to teach a class of young men in Springfield, Massachusetts.

The class was known     4     being difficult to teach and Naismith was told to invent a new game     5     (keep) the young men busy. Then it was winter and very cold outside. It needed to be a game that could be played indoors.

Naismith    6    (think) back to his childhood in Canada where he and his friends had played a game which had involved (需要) trying to hit     7     big stone off a rock with smaller stones. He also remembered     8     (watch) rugby players throw a ball into a box or fruit basket     9     had been raised up. Naismith made up the     10     (rule) for the game in less than an hour. Most of them still apply in some form today.

Exercise is one of the most important     1     (part) of keeping your body at a healthy weight. We also know that     2    (stay) fit and healthy is very vital. Exercise can help prevent weight gain. If you can’t afford     3    (pay) the gym a visit every day, don’t worry — just become active throughout the day.

When you exercise     4    (regular), you are in better chances of improving your mood. It can also increase your confidence. Besides, it will better your appearance,     5     means your body will be in good shape. Regular exercise is also good     6     physical fitness and good health. Apart from weight control, exercise can also delay your aging process.

If you don’t exercise, your muscles (肌肉)    7    (become) very weak. Also, your heart and lungs might not function as well and you are more likely to get     8    (injure). Inactivity is as much of a health risk as smoking.

Make sure that an exercise plan     9    (make), so you can know when and what you should do. However, don’t over-exercise yourself     10     doing too much exercise on a daily basis will have harmful results.